Chip Firm Says a Chief Steps Down

By

Owen Fletcher

Updated Aug. 15, 2011 1:19 p.m. ET

BEIJING—Semiconductor Manufacturing International Corp., China's biggest chip foundry by capacity, said Monday that Chief Operating Officer Simon Yang has resigned, in the latest of a series of management changes that have rattled the company.

The announcement highlights SMIC's uncertain prospects after it also replaced its chairman and chief executive in recent weeks, and after it last week posted a small net loss for the second...